La-ZrO2 and Ru-ZrO2 Promoted Co/SiO2 Catalysts for Fischer-Tropsch Synthesis

Waritsara Bungmek; Passakorn Kongkinka; Siwaruk Chotiwan; Pinsuda Viravathana

doi:10.4028/www.scientific.net/AMR.634-638.551

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638La-ZrO2 and Ru-ZrO2 Promoted Co/SiO2 Catalysts for...

La-ZrO₂ and Ru-ZrO₂ Promoted Co/SiO₂ Catalysts for Fischer-Tropsch Synthesis

Abstract:

The performance of ZrO₂-La promoted silica supported cobalt catalyst (100Co/15ZrO₂/ 100Aerosil/0.66La) was compared to the ZrO₂-Ru promoted one, 100Co/15ZrO₂/100Aerosil/0.66Ru, in Fischer-Tropsch synthesis (FTS). These catalysts were prepared by co-precipitation and incipient wetness impregnation methods. The characterization by XRD confirmed the cobalt phase of Co3O4 in both catalysts. For their catalytic activity on FTS reaction, the results preliminarily showed the higher methane fraction (60-80%) and lower C₂-C₄ (10-20%) and C₅₊ (10-20%) fractions in ZrO₂-La promoted catalyst compared to the fractions of methane (20-40%), C₂-C₄ (20-50%), and C₅₊(10-60%) from the ZrO₂-Ru promoted catalyst. During reaction, the maximum n-paraffin selectivity of 40% was at C₃ and the hydrocarbon chain was up to C₆ for the ZrO₂-La promoted catalyst. For the ZrO₂-Ru promoted catalyst, the result showed the maximum n-paraffin of C₃ at 30 min of reaction time. When the reaction time increased, the maximum n-paraffin selectivity shifted toward higher C number but levelled off (15%) and the hydrocarbon chain was up to C₁₆.

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Advanced Materials Research (Volumes 634-638)

Pages:

551-554

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.551

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Online since:

January 2013

Authors:

Waritsara Bungmek, Passakorn Kongkinka, Siwaruk Chotiwan, Pinsuda Viravathana

Keywords:

Fischer-Tropsch Synthesis (FTS), La, Promoted Cobalt Catalyst, Ru

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